Some of you may have heard from me about stocking a 150 gallon tank with malawi cichlids. I don't want to get locked into mbunas but I would like some of them. I'm more interested in peacocks and haps. Are there some drop-dead gorgeous fish that absolutely must go in such a tank? If I overstock a little, how far can I go with malawi cichlids? I'm planning on using a wet/dry sump filter, maybe a canister, and my Penguin 350 BioWheel for filtration. Should I go for 1000+ gph?